| 摘要 |
A method of calibrating a selected gear sensor 7 in a multi-speed manual transmission (3, fig 1) having a gear shift lever (11) by which a driver may select, using an H-gate shift mechanism, various gears. A power train control module (4) has a transmission state module (5) which receives signals from the selected gear sensor 7 that is attached to transmission casing 3B. The sensor 7 is a single 2D magnetic PWM sensor array that provides based upon variations in flux of a magnetic target 8 associated with turret selector cylinder 3A. In the method the output from the selected gear sensor 7 in a gear engaging direction (Y axis) is analysed for the existence of characteristic velocities which are used to define a calibration value corresponding to a gear pull-in position OPI, EPI. The value of the calibration value is updated when a gear shift occurs and the updated value is used by a transmission state module 5 for the next gear shift to predict a next to be engaged gear. |
